{"id":11,"date":"2014-10-22T07:06:36","date_gmt":"2014-10-22T07:06:36","guid":{"rendered":"http:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/ppp-exercise-7\/"},"modified":"2014-11-10T08:09:09","modified_gmt":"2014-11-10T08:09:09","slug":"ppp-exercise-7","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/ppp-exercise-7\/","title":{"rendered":"PPP Exercise 2B"},"content":{"rendered":"

1. Which of the following diagrams show balanced forces?<\/p>\n

\"\"<\/a><\/p>\n

2. A fully loaded oil super-tanker moves at a constant speed of 12 ms-1<\/sup>. It\u2019s engines produce a constant forward force of 16 000 N. What is the size of the friction force acting on the tanker?<\/p>\n

3. A clock hangs from a peg on a wall. If the weight of the clock is 2 N what is the size of the upward force provided by the peg?<\/p>\n

4. David cycles along the road at a constant speed of 8 ms-1<\/sup>. The total friction force acting on David and the bike is 550 N.<\/p>\n

\"\"<\/a><\/p>\n

\u00a0<\/p>\n

What size is the forward force provided by David pedalling?<\/p>\n

5.\u00a0\u00a0\u00a0 A crane holds a concrete slab of mass 750 kg at a steady height while workmen prepare to position it on the building they are constructing.<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (a)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 What is the weight of the concrete slab?
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (b)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 What is the tension in the crane cable?<\/p>\n

6.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 A helicopter is hovering at a constant height of 35 m. The upward lift force on the helicopter is 85 500 N.<\/p>\n

\"\"<\/a><\/p>\n

(a) What is the weight of the helicopter?
\n(b) What is the mass of the helicopter?<\/p>\n","protected":false},"excerpt":{"rendered":"

1. Which of the following diagrams show balanced forces? 2. A fully loaded oil super-tanker moves at a constant speed of 12 ms-1. It\u2019s engines produce a constant forward force of 16 000 N. What is the size of the friction force acting on the tanker? 3. A clock hangs from a peg on a … Continue reading PPP Exercise 2B<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":2454,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-11","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages\/11","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/users\/2454"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/comments?post=11"}],"version-history":[{"count":5,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages\/11\/revisions"}],"predecessor-version":[{"id":72,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages\/11\/revisions\/72"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/media?parent=11"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}